Chemical-grade coal
This article examines the specialised category commonly called chemical-grade coal — varieties of coal selected or processed for use as a raw material in chemical, metallurgical and high-value industrial applications.…
H-grade coal
This article examines H-grade coal — a term often used in industry to denote higher-quality coal with significant heat output and specific properties that make it valuable for energy and…
F-grade coal
This article explores the characteristics, occurrence, production, economic role and industrial significance of what is commonly referred to as F-grade coal — a practical label used in some markets and…
E-grade coal
This article explores E-grade coal — a commercial classification commonly used to describe lower-rank thermal coals with specific physical and chemical characteristics. It covers where such coals are found and…
D-grade coal
D-grade coal occupies a specific niche in the wider spectrum of coal types: it is typically a lower-ranked, commercially traded category of coal used mainly for thermal applications, industrial heating…
